My lawn consists of many plants and grass is the rarest!In May Veronica filiformis takes command and bloom all over the place. (Ignore tha dandelion!).

Trond, the USDA (United States Department of Agriculture) maintains an "Invasive and Noxious Weeds" list; Veronica filiformis is on it along with 5 other Veronica species. In the last 10 years, a tiny weedy veronica has invaded my lawn and the garden, still trying to figure out which of the 6 noxious weedy non-native veronicas it is. While the plants are minuscule initially, they can flower and seed while incredibly tiny, although they do get bigger and completely carpet the ground and plant beds if they're not weeded out.http://plants.usda.gov/java/invasiveOne

Trond, the USDA (United States Department of Agriculture) maintains an "Invasive and Noxious Weeds" list; Veronica filiformis is on it along with 5 other Veronica species. In the last 10 years, a tiny weedy veronica has invaded my lawn and the garden, still trying to figure out which of the 6 noxious weedy non-native veronicas it is. While the plants are minuscule initially, they can flower and seed while incredibly tiny, although they do get bigger and completely carpet the ground and plant beds if they're not weeded out.http://plants.usda.gov/java/invasiveOne

OK, Mark, I won't send you any. They are not "black listed" here as far as I know (the "Canadian golden rod" is!) but invasive in lawns here at the coast. Anyway I like it! My lawn is little grass and lots of other plants. I never feed the lawn as I am away 1-2 months in summer and nobody cuts the grass.